Argo CD is an open-source continuous delivery tool for Kubernetes that follows the GitOps approach. Application configuration is kept in Git, and the controller continuously compares the live state of the cluster with that desired state. It runs as a controller inside the Kubernetes cluster the organisation operates and is installed with standard Kubernetes manifests. Platform and operations teams use it to deploy and monitor applications.
Argo CD is released under the Apache 2.0 licence and is a graduated project of the Cloud Native Computing Foundation, a Linux Foundation project in the United States. Because it is installed in the organisation's own cluster, the sovereignty question centres on where that cluster runs and who operates it, rather than on a hosted vendor service. European organisations should still review which external sources and registries the cluster connects to.